Concrete-block machine



J'uly 1751928.

' B. F. KREHBIEL CONCRETE BLOCK MACHINE Filed July '7, 1927 2 Sheets-Sheet dpgmllllnunmh n gwuentcw jhzi'ffi'ekhl l Guam Patented July 17, 1928.

PATENT OFFICE.-

B'ENJ'AMIN F. KBEHBIEL, OB WICHITA, KANSAS.

CONCRETE-BLOCK MACHINE.

Application fled July 7,

This invention has reference to an'apparatus especially designed for use in the molding or. construction of concrete blocks or the like articles, the primary object of the invention being to provide a machine which is adjustable for use in molding blocks or articles of various sizes,the adjusting mechanism for adjusting the side plates of the mold being such as to permit the adjustment to be made with facility and accurac Another important object of the invention is to provide a machine of this character which maybe inverted, after the article has been formed so that the article may move from the mold by gravity onto a suitablecarrier where it may be removed from the machine. 1 i a a Another important object of the invention is to provide means for causing the mold or container into which the plastic material or semi-plastic material is being placed to rapidly vibrate, to the end that the material will be evenly spread throughout the area of the moldand will be caused to settle and become-compact in the mold.

A still further object of the invention is to provide an adjustable presser head designed to contact with the pallet of the mold to force the plastic material into the mold and secure the pallet in position, while the mold is being inverted.

lVith the foregoing and other objects in view. which will appear as the description proceeds, the invention residesinthecombination and arrangement of parts and in the details of construction hereinafter de scribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings: 1

Figure .1 is aplan view of an apparatus constructed" in accordance with 1 tion.

Figure 2 is a longitudinal sectional view therethrough.

Figure 3 is a vertical sectional view through the central portion of the ap paratus.

the inven- Figure 4 a a vertical sectional view it 1927. Serial No. 204,106.

lustrating the mold as inverted prior to removal of the article formed by the mold.

Referring to the drawings in detail, the apparatusincludes uprights or end members indicated by the reference character 5 which are formed with bearings 8 at their upper ends in which the shafts 9 rest, the shafts being supplied with depending arms 11- at theirlinner ends. Elongated openings 12 are formed in the arms 11 and are designed to accommodate the bolts 13 that also pass through the dependin arms 14 on the base plate 10 of the mo d. Due to this construction it will be seen that the base plate 10 may be adjusted vertically with respect to the arms 11 and with respect to the shafts 9 so that the material may be supported below the shafts in such a way that the weight is evenly balanced to permit the moldto be easily rotated or inverted.

On the shafts 9 are operating wheels 15 which may be rotated by the operator to swing the mold from its upright position to its inverted position when the article has been formed. In order that the mold may be held in its upright or inverted position, a pin 16 is provided and passed through the operating wheelandinto an opening of the end member associated therewith as clearly shown by the drawings. The mold also embodies end members 16 and side members ends," the blocks being provided with threaded openings, the threads of the blocks ou'on'e of the side members being disposed in a direction opposite to the threads of the opposite side to receive the oppositely disposed threaded portions 19 and 20 respectively of the shafts 21, that operate in bearlugs 22 secured-to theouter edges of the base plate 10. a

Sprockets 23 are secured to the shafts and are-connected by means of the chain 24 so that movement of one shaft will produce a relative movement of the adjacent shaft to insure the simultaneous movement of the side members 117 towards and away from each other so that an adjustment may be made with facility and with a degree of am curacy. 1

An operating handle 951a smeared to one zmaterial .has been splaeed irrtlie mold, the

of the shafts so that upon rotation of the handle, the shaft may be rotated in a manner as described.

It might be further stated that owing to the constructionoit the sidemembers 1,7 and.

manner vof supporting the shafts; the side members are securely held againstlateral a movement by these. shaits, eliminating-other.

necessity of providing corner clamps or uto bea r on the lever 30. I

As shown; ;the upper end of the shank F 27 is formed at right angles-andextends inwardly' overlying the upper-portion of the 1noldproperas; a't 31,- *Where the-same is biwfurcated'to receive the presser head 32 which :is pivotally connected tothe right angled -portion31 by-means t the pivotpin-33.

Thispresser head 321s in the'itorm otan eccentric, :to the end-that the same may coni'tact 'Withuthe pallet '34 of. the mold propel to" force the pallet 34: downwardlyjintoren gagement with the material positioned with -in-thelmoild, and at the same time, provide 4 "means'for-supportingthe pa-l let34r :When the apparatus iseinverted lhtl16=*2LCl'/ 0f removing the: molded article. 7 g j l impor tiant feature oi :the invention: re- .;sides-ir1 the applicationtot vibrators Which'in othe present showing are indicated bfy ;the

arefeuencecharacter 35, and Whichmay. be. of Janya CQIIVQlllGlli) :type such as the type em- -r-ploy ngianysteamror electricity 111 its operaterial. is being positioned thereiiror after the member 35 being connectedwto' the underside iOfUiihG1baSQ plate or other suitable-position.

'It: is? also enntemplated to position these 1 vizbratorsindja'cent to "the. center of: the :base

- plate or in positionsas shown indotted lines -i1rFigure 2 of the drawings. p a

,vlnathe use" of'kthe de icegtheihaudle iis operateduto: rotate itihB e'threaded ashatts 2-1 to adjust the side membersl? of theimold' to ithe proper Width. e The end eneinbensi of the mold. are .now positioned aceordingbtosthe :lengths'iof the artieleikto be .nzrade; andz maz After 9 the materiall; has :beenproperly placed and has been properly tamped sor other clamping means for securing the side lever operated to cause the head 32 to" 3 clamp the pallet 34 into With the side members.

The apparatus is now rotated to-invert the mold, whereupon the lever is moved to its inactive position andthe pallet removed allowing the'ra-rticle r te-move by gravity onto a receiver or any suitable design, Which may -be.' ;positioned under the apparatus to receive the finished block or article. V

1. An apparatus for. molding plastic material includingf supporting"members having bearings shaftsresting in {the bearings, arms i onthe' shafts and having e longated open- 1-ngs, a base; plate having depending i arms close engagement formed with "openings, bolts extending through the elongated openings and open- *ings-of the arms "of the base platekto ad- "justably support the base plate -adj ustable sidemembers forming apart of thea mold aa' pallet for the mold and an adjustable 1 pressing member contacting with the pallet' togre W-ably secure the pallet toeth iu id mem "bers. j V a l Ai PP U 'for moldingiplasticimm teri a l "embodying an invertiblei mold ineluding a vertically adjustable base 'plate-,isi'de members, threaded shafts operating through the side members for moving ther-s'ide :In'embers towards and away fromeac'h other; said threaded shafts adapted to operatethe. side" 1 plates simultaneously, and means for fexertingwpressure on the material undenopera- 3. A mold ltforeinolding. plastic material sembo dying supporting;membergshafts resting in the supportingimembers, a base plate supported. between the shafts and adjustable with respect; ito; .the? shafts,- means for vibrating the mold; .side members forming'a wpart :of the .-m.old,-:-and.--nieans; operating ution \torapidly vibrate the mold: while 'maabove the anold dor exerting a pressure lOIl the material containedinnthe :mold.

4: An. apparatus-tori moldingsemhplastic material embodying supporting: l 1 members, i shafts mounted on the supportmgrmembers,

a shafts to lIrVGlfhthBnbaSE. plate and side Emem- V Y 1 here to. dischange an rartielettherefrom; and

clamping a palletrover the side members; 5i An apparatus for molding semieplastic material embodying: supporting members,

shafts mountedfor rotation on the supportaevertieally adjust-able clamping: memben for xing member-s, apmold including a base iplate mounted between the shafts rside-members cally adjustable shank arranged .zsuhstanstorming :awapart ofithe mold, aapalletyto be -=p0sitioned; over i the side vmembers; a ;vertitially centrally of the base plate and having a. right angled extremity overlying the paillet, a cam pivotally connected with the right angled extremity, a lever for operating the cam, said cam adapted to be moved into engagement with the pallet to press the material and secure the pallet in positionyand means for rotating the mold to invert the mold.

In testimony that I claim the foregoing 10 as my own, I have hereto aflixed my Sig-- nature.

BENJAMIN F. KREHBIEL. 

